525369385 has 4 divisors (see below), whose sum is σ = 630443268. Its totient is φ = 420295504.

The previous prime is 525369359. The next prime is 525369389. The reversal of 525369385 is 583963525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 313608681 + 211760704 = 17709^2 + 14552^2 .

It is a cyclic number.

It is not a de Polignac number, because 525369385 - 2¹⁷ = 525238313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (525369389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52536934 + ... + 52536943.

It is an arithmetic number, because the mean of its divisors is an integer number (157610817).

Almost surely, 2^525369385 is an apocalyptic number.

It is an amenable number.

525369385 is a deficient number, since it is larger than the sum of its proper divisors (105073883).

525369385 is a wasteful number, since it uses less digits than its factorization.

525369385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105073882.

The product of its digits is 972000, while the sum is 46.

The square root of 525369385 is about 22920.9376989686. The cubic root of 525369385 is about 806.9034774950.

The spelling of 525369385 in words is "five hundred twenty-five million, three hundred sixty-nine thousand, three hundred eighty-five".